J17系列三密封復合閥是公司最杰出的創新產品，在閥門節流保護和密封保護上進行創新，增加的兩個密封不僅能起到密封的作用，同時也起到保護主密封的作用，閥門的使用壽命也變得更長；
The J17 series three-seal globe valve is the company’s most outstanding innovative product. Innovations are made in valve throttling protection and sealing protection. The two additional seals can not only play a role in sealing, but also play a role in protecting the main seal. The service life has also become longer;
J17系列三密封復合閥是在J16/J26/J36系列雙密封復合閥的密封基礎上，只保留了原來的閥體樣式，新增一道密封面，并做了更多更進一步的改進；
The J17 series three-seal globe valve is based on the sealing of the J16/J26/J36 series of double-seal compound valves, only retaining the original valve body style, adding a new sealing surface, and making more and further improvements;
閥門關閉時，按照級密封面--->第三級密封面--->第二級密封面的順序依次關閉，三個密封面都實現了密封效果，密封性能更加優異，實現零泄露；
When the valve is closed, it is closed in the order of the first sealing surface --->the third sealing surface--->the second sealing surface. All three sealing surfaces have achieved the sealing effect, the sealing performance is more excellent, and zero leakage is completely realized;
閥門開啟時，按照第二級密封面--->第三級密封面--->級密封面的順序依次打開，更好的保護了第二級主密封；
When the valve is opened, it is opened in the order of the second sealing surface--->the third sealing surface--->the first sealing surface, which better protects the second main seal;
雖然閥內件變的復雜，但我們的J17系列相比同規格的J16/J26/J36系列在體積和重量并沒有太大變化；
Although the valve trim has become more complicated, our J17 series has not changed much in volume and weight compared with the J16/J26/J36 series of the same specification;
而且我們的三密封復合閥的三級密封面都堆焊了STL6/STL12硬質合金組合，耐沖刷和腐蝕，使用壽命更長；
Moreover, the three-stage sealing surface of our three-seal globe valve is surfacing with STL6/STL12 cemented carbide combination, which is resistant to erosion and corrosion and has a longer service life;
口徑：DN20~DN100
壓力等級：CL150~CL2500
產品特點：
繼承了海特科常規截止閥高進低出和閥籠節流的特性；
Inherited the characteristics of HITEK standard globe valve high inlet and low outlet and cage throttling;
三級密封面都堆焊了STL6/STL12硬質合金組合，耐磨損，耐沖刷，使用壽命更長；
Three sealing surfaces are surfacing welded with STL6/STL12 cemented carbide combination, which is resistant to wear and erosion, and has a longer service life;
填料預緊機構，為填料提供持續的預緊力；
Packing pre-tensioning mechanism to provide continuous pre-tensioning force for packing;
手輪螺母采用雙軸承支撐，的減小閥門啟閉所需的力矩。
Two thrust bearing design to reduce the torque of handwheel operation.
閥門內件采用可更換的閥芯、閥座和閥籠，方便檢修，節約時間和成本。
The cage , plug and seat are all replaceable with the valve in line reducing maintenance
costs and down time.
